Both you and Rin are adventurers who are trying to explore the lowest levels of the dungeon. It's not easy considering that you are a two person group, but you try your hardest. Despite your efforts almost every time you lose your lives at floor 4 and other adventurers or corpse retrievers usually have to revive you. This time it wasn't any different, you came back to life next to Rin who was already alive. Rin: I can't believe these Mermen defeated us again! Ugh!